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0. R. SCHULTZ AND O. KiRSCH. METHOD OF AND APPARATUS FOR MAKINGMULTICOLOR PRINTS.

' APFLICATBGN FILED 05022, I921.

Beisauod Feb.14,1922. 1 15,286.

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INVENTORS,

UNITED STATES PATENT OFFICE.

OSWALD. R. SCHULTZ AND OTTO KIRSCH, OF NEW YORK, N. Y.

METHOD OF AND APPARATUS FOR MAKING MULTICOLOR PRINTS.

Specification of Reissued Letters Patent.

Reissued Feb. 14, 1922.

Original No. 1,379,365, dated May 24, 1921, Serial No. 423,889, filedNovember 13, 1920. Application for reissue filed December 22, 1921.Serial No. 524,288.

T 0 all whom it may concern:

Be it known that we, OSWALD RJSGHULTZ and O'r'ro KIRSCH, citizens of theUnited States, and residents, respectively, of the city of New York,county of Bronx, and State of New York, and city of New York, county ofKings, and State of New York, have invented new and useful Improvementsin Methods of and Apparatusfor Making Multicolor Prints, of which thefollowing is a specification.

This invention relates to theproduction of color prints and has for itsparticular objectstherapid and economical production of prints which arefaithfulreproductions of an originalcopy, .both as to design and color,the same being especially suitable for high speed printing such as isemployed in prints can be very materially simplified and at the sametime improved upon by means of the invention hereinafter fully set forthand described in detail. I

1n the accompanying drawing forming a part of this specification, wehave illustrated a diagrammatic vertical section, partially inelevation, of a novel apparatus designed for carrying out our improvedmethod of producing color prints.

Referrin to the drawings and the construction s own therein referencenumerals 1, 1*. 1 designate cylinders or rolls. equipped with offsetlithographic plates, the same being supplied with ink from theirrespective reservoirs 2 through a series of contacting distributingrolls 3, and movable carrier rolls 4: as well as with water fromreservoirs 5 through a series of contacting distributing rolls 6 andmovable carrier rolls 7 in the manner cu'stomaryqin this art. Theaforesaid cylinders are adapted to optionally mesh with a mainimpression cylinder 8,

each of the cylinders 1, 1, and 1 being in- 66 dependently movable toandfro with reders or rolls.

10, and 11, respectively, and each section is equipped with anindividual blanket 9', 10' and 11, respectively, of yielding material,for example "a woven cotton and rubber cloth. Said blankets are wound inthe customary inanner on take-up rolls 12, 13 and let, respectively.

A fourth cylinder 15, which we term an intaglio impression cylinder, isalsoadapted to be thrown optionally into or out of impression contactwith said impression cylinder 8 by the eccentric Y and the said cylinder15 is also adapted to be optionally thrown into or out of impressioncontact with an intaglio cylinder 16. A d'octor or scraper 17 serves toremove ink, supplied from a reservoir 18, from the surface portion ofthe said intaglio cylinder contacting therewith. I

As an example of the manner of providing a color print in accordancewith our invention, we proceed as follows:

Each of the cylinders 1, 1 and 1 is provided with plates such ascustomarily used in offset lithographic printing and represent only the,portion of the original copy which is intended to be printed in theparticular color with which the particular cylinder printing the same issupplied. For example, cylinder 1 will have plates thereon whichrepresent the portion of the print that will correspond to the portionof the original copy that is yellow or a hue or shade that includesyellow in its combination of colors and cylinder 1 and l 'representingrespectively'the red portion and the blue portion of the original copyin the same manner. As it is evident from the construction shown, whenthere are three offset printing 0 linders cooperating with the mainimpress on cylinder, the external-diameter of each of said offsetprinting cylinders will be such that the periphery of each of saidcylinders will be just one-third of the periphery of the main impressioncylinder and as shown, cylinder 1 and 1" will be diametrically opposedto each other and cylinder 1 Y contact with the mainiinpre'ssioncylinder- S drawing. Theportion ofthe original opy ivill bediametrically opposed tothe intalio impressioncylinder 15. The cylinder1 will i.

be supplied with yellow litho-ofiset ink and the cylinders ,l ancl 1with red and bl'ue litho-oifset ink from their respectivereser yoirs,whereas'the intagliocylinderp '16 will used in printing ofblackshacl'es;

be supplied with the usual black intaglio stoppage is advisabletojfsep'aratetheoff- I set printing cylinder froni the main cylinder andimmediately take off the ink from the blanket before it dries' by takingan impression therefrom-and then to start up open tions in the mannerabove described. If desired. the rotogravlire from the cyl' I in'cler 16canibe' applied directly to the sheet At the commencement. of theoperation, of'rnaterial to be printed in lieu of'the aforecylinder 1only is thro yniintolilnp ressibn this being accomplished at themomentxwhefn the periphery of 1 co nes; immediately I aboye; the edgeofya seetion such asffi fsuchtalposi f tion asl forexampleizswillustrated in: the

whieh is represented by fc'ylinderg 1. {will thereuponbe impressed uponthe; blanket '9 '20 rowwfAsLeach successive; sectionpasses besame mpre in-1 Th yl d hi th g'into i'mPreSsiOnoOHtectQWith:eylinderfi at f;immediately" 'beneath the periphery loft lsaitl cylinder 1 uponcylinder" 1!? will impress I upon" the as the: i repressionvcylinderv isrotated infa clock-wise direction as-lnclic-ated by the arneath the'cylinder 1, it also will receive the the moment the sect-ion!) reaches]the; tn

{Whiletstill retaining cylinder 1; inyi rnp ression "contact asaforesaid; 1 Thereblanket 9" the portion of. the original 1 copy,

which itfrepresents and this; color fwill be I sn perimposedlonthe colorreceived from cyll at into. compression contact with the .main imspression cylinder and {thereby the portionof diately, upon seetion:-9arriying at a, point immediately beneath cylinder 15 1 which eare"flriesthepa-per orothern aterial whichit is de:

sired. to print, the said. cylinder 15is thrown,

inder 1 by saidblanket. IAt the moment the f sections!) reaches thepoint immediately be; neat'h thejcylinder: 1 the latter is thrown-- theoriginal copy representedby the; plates of; eylihderyliwill besiiperi'rn upon'the imprint receiyed, from cylin er 1'5; Imrne intoimpression contact with" the impresion cylinder S iand asfa consequencethe trivcoloriimpress onn receivedv from thethree ofl- Y 1 cylinder 15by the eecentric-Zf a themomentsetprinting cylinders will be printedupon the paper "Similerlythe intaglio, cylinder; 161 1S thrownintofimpression contact with: the

' when the impresion; on said' paper passes T is i the paperand-therebythose lportionsvof the} beneath the lcylinder min the conse eve-1 s thaa: mtQ- vu e; p t ll. be i superunpoeed upon the impression earriedlby 3OlflglllltlCOPj; whichcorrespond,totheshadeswill be received from-saidintagilio cylinder,

- .I1;order,to"prevent: astemfink andthe" of the main; impression;cylinder, we provide thesaad' apparatus with wellknow n'niechaaccumulation .of the same n ponfthe blanket I 'nisrnf-',for vstopping:the-machine in ithejeven t :aLbjrealr in the paper, or othermaterialbemgg prmted, 0f course in theevento f sheh' said jincomplete eonposite tri-color jprint taken' tofl" from] the main impressioncylinder, 1. e. the direction, of travel of the sheet and 1therespectiye; rolls can be eversed to reeeiye the intaglio" imprintfirst andthen thesa id incomplete composite triec'olor print.

such an event, however it'would be neces; v

impressionficylinden and in theQpath ofo the' sheetbeingjjbrintedl y 1 Nn Ofin'nventiomIwhieh is applicable aliketo the -printingvofpaper ortextile; renders it.

its

possibleto producemonn continuous webpresses; i even. more faithfulreproductions than "is" obtained labo-rous ofiset "lithegraphicprocesses when employing as; many as six'oolors- Fnrther advantages arethe virtual elimination low ing the register be ng: posit e ,thr ughou mR gh r di cillties such asyere experienced in ordinary oifsf etcol r .vvhereinthesheettravelgv over, numerous cylinders during" theapplfrcation of theeolor thereto and the rediiction to a minimum of thepossibilty o f' blursoe, curring due to stretching "of thelar e blanketsemployed in ,Inost offset color printing vfBesidesthe latteradyanta'gein respect;

to; ininimiiing blurs small seetionsi 0i blankets need are far 1' easierand more Teco nom ical to replac when; soiled orgworn than; arezthelarge blankets-us ia.llyemployed in u wo k- 1- v a iou ;ehangs ings}geimtd iv thi nlthe sc p d-"th p n ea time w t iut d pa f 1 ing from thespirit'ofon'r'invention. I

The yarioins cylinders are of eourse naled in beerlngs and cohneeted intherwell known i manner with powerloperated driving 1 1Furtherrnorejthe; ,varieus disolls shown are of the well-know 11 nt e medat Pr ent i1 5 u in i v i nT e webi; r; S a t r we sel h n ee 'ie' y indr frtqml hic it art aI fl tQm Xm he an l n o qro grevureprints W i a a My receives mde t Prm p course" dried i the usua -In practisingouninyentionfyvemnch pre-.

ferto employ the ordinary p'lanographie,

( -6-1 u fa e. p in ng) plates, on' the i ofiset printingrollsl,v lfand1 as distinguished from the "employment thereon. of intaglio or theincomplete removal of same by the sheet being printedand as aconsequence clean printing inthis manner from such plates,"asdistinguished from the planographic plates commonly used in offsetprintingyw'ouldbe diflicult, if not impossible. 1 a

While ofi'set printing has certain advantages in that the yieldingblanket comperi sates for irregularities in-the paper, as distinguishedfrom direct printing wherein'an unyielding metalplate is in. contactwith the paper,thus enabling one to reproduce delicate shades veryfaithfull ,nevertheless, one of the objections to the 0' set printing isthe fact that one cannot produce the key color varying from the intensedepths up to the finest gradatlonsof tones-as ispossible when allgradations a direct intaglio print i'n '*the-"key '-color issuperimposed in the manner herein described. Accordingly, our process,while enabl'in one to utilize the advantages of'the intag io for the keycolor andjthus obtain of 'color from the intense depths to the softesttones, at the sametime reserves all the advantages of-offsetprint: lngincluding that of the relatively cheap cost of same. i

The term.blanket.as {used inthe claims I is a term well'understood inthe art to indicate yieldin impression-receiving means and commonlyconsists of a built-up rubber:

and-fabric sheet, although obviously it may be made of any suitablematerial capable of offering the necessary yielding support or im. actdesirable in this art.

he term sheet as used in the claims includes,

of course, either onegof a series of separate sheets'or a singlecontinuous sheet such asaweb.

The'term key color as used in the claims is intended to denote themaster or ground color in which the deepest shades as well as some ofthe most delicate tints appear in the finished print.

Having thus described ourinvention, what we claim and desire-to secureby Letters Patent is:

1. In a \press, for making color prints, the combination cdmprising amain v impression cylinder, blanket means supported thereby,

. a plurality of ofiset color-printing cylinders adapted toyieldingly's'upport and a sheet to be printed, all geared tosaid maincylinder, the

eriphery of said latter cylinderv being at east the equal of thecombined peripheries of all the offset color-printing cylindersaforesaid, an intaglio printing cylinder in gear with such supplementalcylinder and 05 adapted to have impression contact with superimposeregistering impressions 9 9a intagIidQprmting"cylinder geared to saidsupplemental. impression cylinder and means a supplemental impressioncylinder,---:

.cy'li ders "and a supplemental impression cylinder, adapted toyieldingly support a sheet to be printed, all geared to said maincylinder,

the" periphery of said latter cylinder being at least the equal of thecombined peripheries of all the offset color-printing cylindersaforesaid, an intaglio printing cylinder in gear with such supplementalcylinder and adapted to have impression, contact with such sheet whenthe same is suppored on said supplemental impression cylinder, means forsupplying ink to said offset printing cylinders and means for optionallythrowing said offset printing cylinders into and out ofimpressioncontact with said blanket means.

I 3. In a press for making color prints, the combination comprising amain impression cylinder, blanket means supported thereby, a pluralityof printing cylinders all of the same, periphery, adapted tosuccessively directly upon said blanket means, a supplemental impressioncylinder, also of the same diameter aseacli printing cylinder, adaptedto serve as a support for a sheet of material'to be printed, means foroptionally throwing said printing cylinders and said supplementalcylinderinto and out of impression contact wi said main cylinder, andthe periphery of the latter cylinder being at least the. equal of thecombined peripheries of all the 'printing'cylinders aforesaid, an

intaglio printing cylinder in gear with said supplemental impressioncylinder. and of substantially equal diameter therewith and means forsupplying ink to said printing cylinders andsaid intaglio cylinder.

4. In a press forv making color prints, the combination comprising amain impression cylinder, blanket means supported thereby, a

plurality of offset, 'cOIorTprinting' cylinders anda supplementalimpression cylinder all geared to said main cylinder, the periphery of"'said, latter cylinder being; at least the equal of thelcombinedperipheries of all the tinting cylindersaforesaid, an

for option I I lly throwingsaidofi'set printing "into and out ofimpression contact blanket, a supplemental impression cylinder adaptedto serve as a support for a sheet of material to be printed, means foroptionally throwing said printing cylinders and said supplementalcylinder into and out of impression contact with said main cylinder, andthe periphery of the latter cylinder being at least the equal of thecombined peripheries of all, the printing cylinders aforesaid, anintaglio. printing cylinder in gear with said supplementalimpressioncylinder and means for supplying ink to said printingcylinders and said lntaglio. cyl- J index.

6. In a press for making color prints; the combination comprisingprinting means .for producing an incomplete multi-color .ofl'setcomposite impression upon a sheet of material to be printed androto-gravure means for imprinting directly upon said sheet an impressionfrom an intaglio cylinder in register with such incompletecompositeimpression. I

7. In a press for making color prints, the sub-combination comprising amain impression cylinder, blanket means supported thereby, azplurali-tyof printing cylinders equipped with printing plates on the peripheriesthereof and a supplemental impression cylinder, adapted to yieldinglysupport a'sheet'to be pi-inted,all geared to said main impressioncylinder, an intaglio printing cylinder in gear with the lattercylinder,

and means for optionally throwing said printing cylinders int-o andoutof impression contact with the blanket means on said nrain impressioncylinder.

8; The continuous method of making color prints,which cimsists insuccessively takinlgofl upon a liilanket registering impressionsfrom a.plurality of moving ofiset colorprinting surfaces, then taking oil acomposite impression from said blanket onto a sheet of material to beprinted and then taking ofi" an impression in register with saidcomposite impression on said" sheet from an intaglio plin'ting surface.

9. The continuous method of making color prints, ing off upona blanket"'istering imipres sions -in difierentcolors respectively from aplurality of movingoliset color-printing surfaces, each ol" said .ingonly the bcf reproduced "Wll ch is intended to be printed in "the'izin-tu'rular ruili'ir'of said imimpressions represent -sheetof'material to be-'printed,

which consists in. successively tak iortion of the mi imal co 1 r topressiomthen taking. off the composite impression so made from saidblanket onto a sheet of material to be printed and then directly"superimposing upon said composite impression a registering impressionfrom an intaglio printing cylinder consisting of that portion of theoriginal which was absent from such oflset impression.

10. The continuous method of making color prints, which consists insuccessively taking off upon a blanket registering impressionsindifferent colors respectively from a plurality of mowing ofi'setcolorprinting surfaces, each of said impressions representing only theportion of the original copy to be reproduced which is intended to beprinted inthe particular color, of said impression, then takingofl thecomposite impression so made from" said blanket onto a sheet of materialto be printed,then superimposing in register with, said latter impression an impression from an intaglio printing cylinder which latterimpression represents the portion of the original copy to be reproducedthat is intended to appear as shades.

11. In the continuousmethod of making color prints, the stepswhichcomprise the successive taking off upon a blanket of registeringimpressions in different colors respectively from a plurality of movingoffset color-printing surfaces, transferring such multi-color compositeimpression from said blanket to a sheetof material to be printed, thendirectly superimposing upon said composite impression on such'sheet a.registering impression from an inta glio printing cylinder which latterimpression corresponds to that portirm ofthe originalwhich was absentfrom. said multi-colorimpression offset upon. said sheet.

12. The method. of making color prints, which consists in firstoffsetting upon a a plurality of registering impressions from separateoffset printing rolls and then directlysuperin'iposing upon suchcomposite impression an in'ipression from an. intaglio printing plate,said iutaglio impression being in the OSWALD n. SCHULTZ. OTTO mason.

